阿拉套黃耆
阿拉套黃耆 |
中文學名:阿拉套黃耆 拉丁學名:Astragalus alatavicus Kar. & Kir. 界:植物界 門:被子植物門 綱:雙子葉植物綱 亞 綱:原始花被亞綱 目:薔薇目 亞 目:薔薇亞目 科:豆科 亞 科:蝶形花亞科 族:山羊豆族黃耆亞族 屬:黃耆屬 亞 屬:華黃耆亞屬 短縮莖組 命名者及年代:Kir, 1842 |
阿拉套黃耆(ā lā tào huáng qí,學名:Astragalus alatavicus)為豆科黃芪屬的植物。產新疆北部和西部。生於海拔3 700米的高山草地或礫石灘上。原蘇聯及阿爾泰地區和天山也有分布。 [1]
目錄
阿拉套黃耆形態特徵
多年生草本。 根粗壯,直伸。莖短縮,散生白色柔毛,高5-20厘米。
奇數羽狀複葉基生,具4-8片輪生小葉,共有10-17輪,長5-12厘米;葉柄長2-6厘米;托葉寬披針形,長8-12毫米,寬2-3毫米,膜質,帶紅色,邊緣具絲狀緣毛;
小葉長圓形或長圓狀卵形,長4-8毫米,寬1-2毫米,上面無毛或近無毛,下面被較密開展的白色柔毛。
總狀花序生3-5花;總花梗通常基生,長2-6厘米;苞片線狀披針形,長4-8毫米,下面散生白色柔毛;花萼管狀,長12-17毫米,無毛或散生白色柔毛,萼齒線狀披針形,長約為萼筒的1/3或更短;
花冠黃色,干後帶紅色,旗瓣長20-26毫米,瓣片倒卵形或長圓狀倒卵形,先端鈍圓或微凹,基部漸狹,下部1/3處稍膨大呈角棱狀,瓣柄長4-8毫米,翼瓣長19-24毫米,瓣片橢圓形,上部較寬,基部具短耳,瓣柄長為瓣片的1.5倍,龍骨瓣長18-22毫米,瓣片半圓形,基部具短耳,瓣柄長為瓣片的2倍;
子房狹卵形,密被長絲狀毛,柄長2-2.5毫米。
莢果長圓狀卵形或倒卵形,長約1厘米,先端具長約2毫米的短喙,果瓣薄革質,密被開展的白色長柔毛,不完全的假2室。 花期5-7月,果期7-8月。 [2]
Astragalus alatavicus Kar. et Kir. in Bull. Soc. Nat. Moscou 15: 344. 1842; Bunge in Mem. Acad. Sci. St. Petersb. VII. 15 (1): 42. 1869; Gontsch. in Kom. Fl. USSR 12: 224. 1946; Golosk. in Pavl. Φπ. Казахст. 5: 145. t. 19 (1). 1961.
Plants 8-20 cm tall, acaulescent, caespitose. Leaves 4-20 cm; stipules 5-12 mm, adnate to petiole for ca. 2 mm, densely ciliate; petiole 1-7 cm, like rachis loosely to rather densely covered with spreading hairs 1-2 mm; leaflets 4-8 verticillate in 10-18 approximate whorls, narrowly elliptic to narrowly obovate, 3-8(-15) × 1.5-2.5(-3) mm, mostly folded, abaxially rather densely covered with appressed to ascending hairs, adax-ially glabrous, apex rounded. Racemes 3-5-flowered; peduncle 0.2-0.6(-2.5) cm, spreading hairy; bracts 4-8 mm, hairy. Calyx 10-15 mm, very sparsely to loosely, more rarely rather densely, spreading hairy, at base often completely glabrous; teeth 2-3 mm. Petals yellow, fading reddish; standard oblong-pandurate, 20-26 × 7-10 mm, in lower 1/3 distinctly constricted, apex deeply incised; wings 19-24 mm; keel 16-22 mm. Legumes with a stipe 2-3 mm, 8-15 mm, 4-5 mm high and 3-4 mm wide, with a beak ca. 2 mm, incompletely 2-locular; valves rather densely covered with ascending hairs.
Stony ground in subalpine to alpine zones; 1700-3400 m. Xin-jiang [Kazakhstan, Kyrgyzstan, Uzbekistan].
阿拉套黃耆生長環境
生長於海拔3 700米的高山草地或礫石灘上。